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This is my very first pair of custom IEMs after trying almost all of the high end universal IEMs -- SE530, UE Super Fi 10, Etymotics etc. The sound of these UE11 Pros is superior in every way to all of the universal ones I had, but even more important they stay in my ear and provide a proper seal. Since my ear canals get very narrow, I found it very difficult to get any of my universals to...” --alyanm

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I had owned the UE-10's before this for about 3 years. So upgrading to these was a huge improvement in my opinion. Very nice full sound, with improved frequency response from 20 Hz to 18,000 Hz. Bass is much more present on these but not too overly stated. Gorgeous build quality. Very happy with these In ear monitors, I also own the JH-16's and still love listening to these all the time on...” --Richard Devine

“First I would like to inform that this review is not going to be long. i will just describe everything very briefly. first thing is i am not an audiophile but I play guitar and I love music. So the following review I am going to talk about the things which are I consider important for choosing the right headphone.
Built Quality:
To be honest i think the build quality of this...” --dkshifat

Tuned by the same engineers who make the custom earphones preferred by the world’s top touring musicians. Tuned with extra bass for deep, thumpin’ beats that make you feel like you’re in the middle of the club.Your earphones are built to keep on looking and sounding great. With five pairs of soft silicone ear cushions from XXS to L, you won’t have to worry about getting...

“This is sort of a mini review.
Overall the sound and build quality are pretty okay. I like the smooth and balanced sound signature these in-ears have. The soundstage isn't too wide or high but it's acceptable. There is sibilance on high notes but with lower volumes it's okay. Bass is not overly powerful but still leaves impact and the mids and trebles are smooth and clear.
I...” --Slashfury99

We developed the Ultimate Ears 4 Pro Custom In-Ear Monitors specifically for emerging artists and audiophiles alike. If you're playing gigs at a local club or performing at church, now it's possible to make the move up from wedge monitors to the detail and versatility you only get with Custom In-Ear Monitors. Ultimate Ear's UE 4 Pro Custom In-Ear Monitors are crafted to fit,...

“I'm giving these a 4 based on sound quality alone. I'm a cheap headphone user; I've gone from cheap headphone to cheap headphone over the past decade or so. I started with the Skullcandy Ink'd headphones, moved onto the Sennheiser CX400s, then the Meelectronics M6 and M9, and finally, this. I've also tried the Klipsch S4's. I'm currently on my third pair of these because well, they're so damn...” --az060693